Can a buck converter provide variable voltage depending on the clock the miner is set at? Some people said by underclocking it raised their efficiency and that should not happen unless the voltage is variable to an extent or there is more efficiency loss at higher speed.
If it is tied into the main controller then it could be adjusting the voltage, until someone traces the circuit / makes some measurements we will not know.
But agreed as we have all discovered just changing the clock frequency and leaving the voltage the same leaves the efficiency virtually the same. What sort of improvement to efficiency have people seen?
Rich